The bug this causes is
(GameConqueror.py:19834): Gdk-CRITICAL **: gdk_window_get_window_type: assertion 'GDK_IS_WINDOW (window)' failed
as documented here
https://bugzilla.gnome.org/show_bug.cgi?id=771242
The bug this causes is
(GameConqueror. py:19834) : Gdk-CRITICAL **: gdk_window_ get_window_ type: assertion 'GDK_IS_WINDOW (window)' failed
as documented here
https:/ /bugzilla. gnome.org/ show_bug. cgi?id= 771242